<template>
  <view>
      <view class="search-box">
        <uni-search-bar @input="input" placeholder='请输入搜索关键词' cancelButton='none'  :radius="100" :focus="true" ></uni-search-bar>
      </view>
      
      <view class="sugg-list" v-if="searchResult.length !== 0">
        <view class="sugg-item" v-for="(item,index) in  searchResult" :key="index" @click="gotoDeatil(item)">
          <view class="goods-name">
            {{item.goods_name}}
          </view>
          <uni-icons type="arrowright" size="16"></uni-icons>
        </view>
      </view>
      
      <view class="history-box" v-else>
        <view class="history-tit">
          <text>搜索历史</text>
          <uni-icons @click="delAllHistory" type="trash" size="17"></uni-icons>
        </view>
        <view class="history-list">
          <uni-tag v-for="(item2,index2) in history" inverted='true' :key="index2" :text="item2" @click="gotoGoodsList(item)"></uni-tag>
        </view>
      </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer:null,
        kw:'',
        searchResult:[],
        historyList:[]
      };
    },
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]')
    },
    methods:{
      input(e){
        clearTimeout(this.timer)
        this.timer = setTimeout(()=>{
          this.kw = e
          this.getSearchList()
        },500)
      },
      gotoDeatil(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      },
    async getSearchList(){
      if(this.kw.length ===0 ){
        this.searchResult =[] 
        return
      }
      const { data: res } = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
        if (res.meta.status !== 200) return uni.$showMsg()
        this.searchResult = res.message
        this.saveHistory()
    },
    saveHistory(){
      const set = new Set(this.historyList)
      set.delete(this.kw)
      set.add(this.kw)
      this.historyList = Array.from(set)
      
      uni.setStorageSync('kw',JSON.stringify(this.historyList))
    },
    delAllHistory(){
      this.historyList = []
      uni.setStorageSync('kw','[]')
    },
    gotoGoodsList(item){
      uni.navigateTo({
        url:'/subpkg/goods_list/goods_list?query=' + item
      })
    }
    },
    computed:{
      history(){
        return [...this.historyList].reverse()
      }
    }
  }
</script>

<style lang="scss">
.search-box{
  position: sticky;
  top: 0;
  z-index: 888;
}
.sugg-list{
    padding: 0 5px;
  .sugg-item{
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    .goods-name{
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
  }
}
.history-box{
  padding: 0 5px;
  .history-tit{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  .history-list{
    display: flex;
    flex-wrap: wrap;
    .uni-tag{
      margin-top: 5px;
      margin-right: 5px;
    }
  }
}
</style>
